2007 Arden XKR AJ20

Arden rebuilds this eight-cylinder engine from scratch and sharpens the claws of this big cat by increasing its displacement.

The displacement increase to 4.5 l is achieved by fitting a crankshaft specially produced for Arden, along with new con rods and pistons. Arden elicits an impressive 480 bhp / 353 kW and an awesome torque of 640 Nm at 3.850 rpm from its supercharged 4.5 l V8 engine.

The Arden body modification underlines not only the powerful character of the Arden XK AJ20 but it also increases the aerodynamic efficiency of this real sport car. The aerodynamic was intensively tested and optimised in the wind tunnel with the effect of a better air drag coefficient combined with higher down force for superb handling.

While testing the AJ 20 on the high speed course at ATP Papenburg a top speed of 305 km/h makes the XK AJ 20 Coupe the fastest Jaguar currently on the road.

In Detail

submitted byRichard Owen
engineV8
aspirationEaton Supercharger
valvetrainDOHC, 4 Valves per Cyl w/Variable Inlet Camshaft Timing
displacement4500 cc / 256.1 in³
bore86 mm / 3.39 in
stroke90.3 mm / 3.56 in
specific output93.33 bhp per litre
torque640 nm / 472.0 ft lbs @ 3850 rpm
body / frameRiveted and bonded Aluminium
front brakesVented Discs
f brake sizex 355 mm / x 14.0 in
rear brakesDiscs
r brake sizemm / in
curb weight1720 kg / 3792 lbs
wheelbase2752 mm / in
length4791 mm / 188.6 in
width1892 mm / 74.5 in
height1322 mm / 52.0 in
transmission6-speed Automatic w/Jaguar Sequential Shift
gear ratios4.171:1, 2.340:1, 1.521:1, 1.143:1, 0.867:1, 0.691:1, :1
final drive3.31:1
top speed~305 kph / 189.5 mph
0 – 60 mph~4.0 seconds
drag0.341 Cd